BUS: line 824 from T1, T2 and T3, every 30 min. It arrives at the centre of Alcalá. If your plane has arrived at T4, you must take the airport shuttle service that connects the terminals.
Approximately 40 minutes journey time
One way ticket: 3.60 €.
TAXI: 20 minutes journey time.
Approximate cost: 25-35 €.